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Eric, Automotive Repair Shop Manager
Category: Car
Satisfied Customers: 32550
Experience:  Automotive Repair Shop Manager, Technician/JA Mentor
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I am driving the car as I normally do, but there feels like

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I am driving the car as I normally do, but there feels like there is a lot less power. What is the problem?

what is the year, make, model, engine size?

how many miles on it?

is there any warning lights such as check engine or ETC light on?

Customer: replied 4 years ago.

2003, sentra, 150,000 miles on it. no light on.


Ok, when you say "less power", do you mean it is slower on acceleration like the engine is hesitating or bogging down, or engine revs up fine but transmission not keeping up with the engine on acceleration?

Any recent work done on the engine lately such as tune-up?

How long since coils and plugs were replaced?
Customer: replied 4 years ago.

Yea, kind of like that. I dont think ive ever replaces the coils and plugs



Ok, with 150K miles on it, you need to start with a couple of maintenance items to restore power and get rid of hesitation and bogging down.

First, replace the spark plugs. they should be replaced every 90 to 105K miles.

Second, the fuel injectors, intake manifold, valves, and egr need to be cleaned of carbon build up. this is done with a special machine and chemical and costs about $100 to have done.

doing both of these should restore the power to your engine.
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